Privacy & Terms

When you sign in with Google or GitHub we receive your name, email, and profile image. As you use the app we store the data you create: topic progress and confidence, notes, quiz answers, study minutes, and your Tensor Code submissions and solved problems.

No passwords (sign-in goes through your provider — we never see one), no payment details, no precise location, no contacts, and no advertising or cross-site tracking. We don’t sell or share your data.

These are opt-in. You stay private unless you choose a username — only then does a public profile at /u/<username> exist and your name appear on the leaderboard (with points, problems solved, topics, and streak). Remove your username anytime to drop off both.

Code you submit is executed in an isolated sandbox, purely to grade it against the problem’s tests. We keep your submissions so you can revisit them; we don’t use them for anything else.

We use Vercel Web Analytics for aggregate, privacy-friendly traffic counts (page views and visitor totals). It sets no cookies, doesn’t track you across sites, and doesn’t collect personal information. There are no advertising or third-party tracking SDKs.

We keep your data until you delete your account — go to Settings → Delete account to wipe your records (backups roll off on their own schedule).

Secure session cookie keeps you signed in. That’s it — no ad or tracking cookies.

Questions or requests? Use the Feedback page once you’re signed in.